Venturi feature scrapped
Not all ideas are good ideas…
As a holder of an overabundance of ideas, I live my life by this guiding principle I call the idea funnel.
Not every idea is a good idea
Not every good idea is a lucrative idea
Not every lucrative, good idea is worth your time
The small venturi tubes I was hoping would improve the performance of this intake, I believe, failed at the first section of this funnel. I didn’t even simulate the airflow of them because I felt that any development toward including a venturi tube in the intake charge path was not going to be a good use of time. A venturi tube does not work unless it’s a certain amount smaller than the main tube. In this case, since the main tube couldn’t be smaller than 35mm, the venturi tube would not be large enough to move a significant volume of air. So I scratched it.
But, the idea gave rise to a principle I am going to move forward with. Which is, in the secondary solenoid valve-controlled air path, I’m going to alternate which velocity stack goes to which intake port. Instead of the cylinder 1 port drawing air from the cylinder 1 stack, it will draw air from the cylinder 3 stack. Since cylinder 3 will be the next port to call for air from the manifold, the air displaced in the cylinder 3 stack due to the cylinder 1 intake event will have more velocity before the cylinder 3 intake event than it otherwise would have. This drawing of air from two intake tubes instead of one will produce a more uniform flow of air within the plenum.
It is at this point in the development phase that the intake obtains its name, due to the three different airspeeds found within the system.
Slowest-moving air moves across the outside edge of the plenum and into the inner radius of the velocity stack
Mid-moving air moves from the main inlet into the outer radius of the velocity stack
Fastest-moving air moves from the outer radius of the velocity stack and through the secondary tubing (bypassing the throttle bodies)
Check out the video below to learn more!